Spanner wrench



Oct. 11, 1932. 5, WEBER 1,882,462

smmnn warmer:

Filed July 31. 1951 INVENTOR ATTORNEY Patented Oct. 11, 1932 STANLEYWEBER, F LONG ISLAND CITY, NEW YOIB:

SZPANNER wnnnon Application filed July 31,

This invention relates to wrenches and particularly to spanner wrenchesby means of which various kinds of nut devices and other equipment of asimilar character used on or 6 in connection with machinery aretightened and loosened.

In view of the high speed which [modern machinery attains, manufacturersare turning more and more to the use of round nuts for purposes ofsafety and balance. The tool of the present invention has been devisedespecially for use in connection with this'class of nut devices,although it will be recognized that its use is not limited or confinedthereto.

As is well understood, nut devices carried by machinery operating athigh speed tend to tighten themselves, rendering removal difficult; andit is a common practice in endeavoringtoloosen or remove nuts which havebeen excessively tightened, to strike the free end of the wrench withlight yet relatively sharp blows. The wrenches at present in use forsuch purpose, being composed of either pivoted or hinge connected parts,yield with a spring-like effect under the impact of the blow so thatmuch of the force of the blow is lost. In taking many mechanicalstructures apart, say for example, ball bearing motors which are to betaken apart for purposes of cleaning, rewinding or replacement of theball bearings, an object to be attained is to remove the nuts withoutinjury thereto and without damaging the threads or other parts. In orderto remove the nut devices from such special machinery, it 'is oftennecessary to make use of a punch or the like and in so doing tobringabout damage beyond repair.

The object and purpose of the present invention are to provide a simpleand practical tool by means of which successfully to cope with thedifficulties referred to and others; to avoid damage and delay, andoften the cost incident to a shut-down of an important piece ofmachinery.

One of the objects of the invention is to provide a wrench the leverhandle and spanning arms of which are without pivot or hinge connectionsso that the fullforce of a sharp blow, which is delivered at the freeend of the 1931. Serial No. 554,249.

lever handle, will be transmitted to the nut device.

A further object is the provision of jaw or bar parts which are firmlyseated and held in the arms a ainst yieldin under turning.

impulse, but w ich are capab e of ad'ustment radially with respect tothe axis 0 the nut to be operated upon.

A still'further object is the provision of a tool of the characterdescribed which is furnished with instrumentalities for en agingtool-receiving openings of various kin s.

With the foregoing objects in view and others not specificallyenumerated above but which will appear to one skilled in the art, Y

the invention consists of the novel construc tion, combination andarrangement of parts hereinafter more specifically described, andillustrated in the accompanying drawing, wherein is shown a singleexample of the invention as reduced to practice.

In the drawing, wherein like reference characters denote correspondingparts throughout the several views Figure 1 represents a top plan viewof a spanner wrench made in accordance with the present invention, thisview also showing in dash-dot lines the outline of a nut with which thewrench is in engagement;

Fig. 2 is an edge view and Figs. 3 to 8 are details of various types ofnuts with which the wrench may be employed Figs. 3 and 4 being,respectively, plan and sectional views of one type of nut, with thesectional yiew of Fig. f taken on the line H of Fig. 3; Figs 5 and 6being plan and edge views, respectively, of another type of nut; andFigs. 7 and 8 being plan and edge vietyvs, respectively, of stillanother type of nu The preferred form of construction, as illustrated inthe accompanying drawing, comprises a solid elongated bar-like turninglever 10 which is shaped to be grasped by the hand and to serve as ahandle. The end portion 11 of the lever is free and unobstructed. At

its opposite end the lever is formed with a pair of integral spannerarms 12 which extend n opposite directlons, spanning an interveningreceiving space 13. These two inpartial section;

. tegralspanner arms may be given any shape or form desired or necessaryfor carrying out the invention, but by preference they curve on asemi-circle as shown in order best to accommodate the wrench tool foruse in connection with round nut devices.

Each of the spanner arms 12 terminates in a head 14 which may be widenedin an outward direction, that is to say, in a direction opposite to theintervening receiving space 13. Cut, formed, or otherwise producedtransversely in each of the heads 14 at one side thereof is a channel orrecess 15, the side walls of which constitute shoulder abutments 16 inspaced opposition. A jaw or cross bar 17 is dis osed in each of thechannels 15, its fit therein eing snug so that the shoulder abutments16. during turning movement of the lever about an axis, will prevent anyshifting or yielding movement of the jaws relatively to the arms.

The transverse channels 15 may be provided, and preferablyare provided,in alignment, so that the jaws or cross bars 17 disposed therein will bein lengthwise alignment. The jaws 17 are of a length to extend wellbeyond the opposite edges of the head portions, and each jaw is providedat each projecting end thereof with a projection or pin suitable forentering a tool receiving aperture of a nut device. In the presentinstance, the projecting means carried for such purpose at the opposlteends of each of the jaws consists of pins 18 and 19; it being noted thatthe pins 18 project laterally from the jaws in angular relation to thelong axis thereof, while the pins 19 have projection in alignment withthe long axis of the jaws.

Means are provided for adjustably securing the jaws or cross bars 17 intheir channels. To this end, in the present embodiment, each of the jaws17 is provided with a lengthwise extendin slot 20. Transversely througheach of t ese slots is passed a screw element 21 which is screw-threadedinto the head 15. The face of each of the jaws 17 is preferably beveledas at 22 around the slot 20 in order to provide a suitable countersinkfor the head of the screw. With the described arrangement, the jaws orcross bars can be readily reversed end for end in order that either thepins 18 or the pins 19 may be located within the receiving space 13 forengagement with the nut device 'to be turned. In addition to this, thejaws may be fixed in their channels in that precise position necessaryfor engag ing the pins with tool receiving openings as 23 of a round nutdevice 24. Furthermore, by this arrangement, irrespective of the preelseposition in which it is necessary to fix them in their channels, thejaws are firmly held against sidewise shifting or yielding movementsduring the turning of the wrench about the axis of the nut with whichthe pins are interengaged.

In Fig. 1, the nut 24 which is illustrated in detail in Figs. 3 and 4,is shown in dashdot outline in connection with the wrench tool, and withthe jaws fitted and adjusted so that the pins 18 will enter thetool-receiving apertures 23 of the nut device. In Figs. 5 and 6, Iillustrate another type of nut device 25 in which the tool-receivingapertures 26 are of the open and angular t pe, the same being providedin the circum erence of the nut device. The pins 18 are adapted to beinserted in the open apertures 26 for manipulating this type of nut. InFigs. 7 and 8, I illustrate still another type of nut 27 in whichcircular apertures 28 extend into the body of the nut from thecircumference thereof. In order to be applied to a nut device as 27 thejaws 17 are reversed end for end so that the pins 19 will occupy aposition in the space 13 for engagement with the apertures 28.

When the wrench of my invention has been applied to the nut to beturned, by inserting appropriate pins in the, tool-receiving openings ofthe nut, a blow or blows, if it be necessary to tighten a loose nut orto loosen a tight nut, may be struck by a hammer or otherinstrumentality against the longitudinal edge of the lever 10 at or nearits free end portion 11, the blows being, of course, delivered in thedirection in which it is desired to turn the nut upon its axis. Owing tothe manner in which the jaws or cross bars are seated in the rigid armsand held against sidewise movement by the shoulder abutments, a wrenchis provided which, for turning purposes, is rigid from the free end ofthe lever or handle to the aperture engaging pins. By sharply rapping orstriking on the lever adjacent its free end, the nut device engaged attwo opposite points by the pins, is readily turned on its axis and hencetightened or loosened as the case may be. Since the jaws are reversibleand can be adjusted lengthwise with respect to the axial center line ofthe nut, the wrench can be used for loosening or tightening diflerentkinds of nuts which now require individual spanner wrenches of theproper size to fit the particular unit. The spanner wrench of myinvention is exceedingly simple in construction and economical inmanufacture, while possessing the advantage of being sturdy andproviding for the loosening and tightening of different types of nutswithout injuring the nuts or the parts upon which the nuts are threaded.

Although in the present disclosure, in order to illustrate in a generalwaythe range of practicability of my inventlon, I have shown andenumerated three different spec1fic types of nut devices, it will berecognized that in practice my improved spanner wrench has a much widerrange of utility and that 1t may be used in connection with variousadditional types of nut devices and instrumentalities not specificallyillustrated or enumerated herein.

It is to be understood that in the further development of my invention,I reserve the right and privilege of resorting to all such legitimatechanges and modifications in the form, construction and relativearrangement of the various parts as may be fairly incorporated in thespirit and scope of the inven- 1 tion as claimed.

I claim 1. A spanner wrench including a turning lever having a free endportion and opposite thereto a pair of rigid arms spanning'a space,

separate cross bars on the arms having portions projecting into thespace and shaped for en aging an article to be turned, and means betweenthe arms and bars to afiord and maintain a rigid engagementtherebetween, to effect thereby a rigid wrench tool which does not yieldloss of turning force between its free end portions and the project-- ing article engaging portions.

2. A spanner wrench including a lever having a U-shaped end forming apair of spanner arms, transverse abutments provided on the arms andforming seats, bars disposed in the seats and held by the abutmentsagainst sidewise shifting movement, said bars extending beyond the sidesof thearms and shaped for engagement with an article to be turned, andmeans for securing the bars to the arms.

3. A spanner wrench includin formed at one end with a pair 0 spannerarms, heads on the arms defining a space and including in theirconstruction transverse channels bounded by shoulder abutments, barsdisposed in the channels and held by the shoulder abutments' againstsidewise shifting movement, said bars extending into said space andshaped for engaging an arti cle to be turned, and means bars to theheads.

4. A spanner wrench including a lever for securing the i having aU-shaped end forming a pair of spanner arms, transverse grooves providedon the arms and forming seats, bars disposed in the seats having pinsprojecting therefrom and held by the grooves against sidewise shiftingmovement, said bars extending beyond the sides of the arms and shapedfor engagement with an article to be turned, and means for securing thebars to the arms comprising slots in one set of said parts and screwsextending through the slots and engaging the other set of said parts.

'5. A spanner wrench including a lever formed at one end with a pair ofspanner an arms in spaced opposition, forming an intervening spacebetween the arms, there being transverse channels in the arms, barsfitted in the channels against sidewise shifting movement, pinsprojecting from the bars within said space and adapted to be engaged .inthe channels and endwise movable therein relation with the bars, thebars being revera lever with an article to be turned, and removableconnections extending between the bars and arms.

6. A spanner wrench including a lever formed at one end with a pair ofspanner arms in spaced opposition, forming an intervening space betweenthe arms, there being transverse channels in the arms in communicationwith said space, separate bars fitted for projecting into said space,pins fixed to the opposite ends of the bars, the pins at one endprojecting at an angle to the bars while those at the opposite endproject in aligned 8Q siblefor locating either type of said pins in saidspace, and means for securing the bars to the arms in the position towhich they are moved thereon.

7. In a spanner wrench, a lever having a pair of integral spaced armsforming an intervening space, there being aligned channels in the armsin communication with the space, separate bars in the aligned channelsprojecting into the space, pins on the bars within the space adapted forengagement at opposite points with an article to be turned about itsaxis, and means adapted to afiord and maintain an engagement with thebars and arms for securing the former to the latter in a posit-ion ofadj ustment in said channels.

8. A spanner wrench including a lever, a pair of rigid spanner armsprojecting from the lever to form an open receiving space intermediatethe arms, and adjustable means 190 projecting from the arms into thereceiving space, having extensions thereon for engaging an article to bemoved by said wrench.

9. In a spanner wrench, a lever having a pair of spaced integral armsforming a U- shaped end, said arms having transverse channels andforming aligned seats, adjustable separate bars in the channels movabletoward and away from each other and transversely of the arms, andmeans'for maintain- 119 a ing an engagement with the bars and arms tosecure the latter in position in the channels, each arm having pins atits ends with their longitudinal [axis disposed at right angles to eachother.

Inv testimony that I claim the foregoing as my invention, I have si edmy name hereto.

; ST NLEY WEBER.

